EP0429447A4 - Gasket assembly and electrical power transformer including the same - Google Patents

Gasket assembly and electrical power transformer including the same

Info

Publication number
EP0429447A4
EP0429447A4 EP19890902849 EP89902849A EP0429447A4 EP 0429447 A4 EP0429447 A4 EP 0429447A4 EP 19890902849 EP19890902849 EP 19890902849 EP 89902849 A EP89902849 A EP 89902849A EP 0429447 A4 EP0429447 A4 EP 0429447A4
Authority
EP
European Patent Office
Prior art keywords
gasket
slot
base
circular
undercut
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19890902849
Other languages
English (en)
Other versions
EP0429447A1 (en
Inventor
Wendell D. Johnson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualitrol Co LLC
Original Assignee
Qualitrol Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualitrol Co LLC filed Critical Qualitrol Co LLC
Publication of EP0429447A1 publication Critical patent/EP0429447A1/en
Publication of EP0429447A4 publication Critical patent/EP0429447A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/02Casings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0466Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with a special seating surface
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49229Prime mover or fluid pump making
    • Y10T29/49297Seal or packing making

Definitions

  • This invention relates generally to sealing gasket assemblies and more particularly to sealing gasket assemblies used in electrical power transformers.
  • a pressure tight seal is needed 0 when the valve used in the device is closed or seated.
  • the valve must react quickly to relieve the pressure in the transformer without destroying the seal mechanism or dislodging any gasket material which may be involved.
  • This invention utilizes a five-sided gasket in an undercut slot, secured with epoxy to mechanically increas the retention of the gasket in the valve base of a power transformer.
  • Fig. 1 is a partial cross section view of a power transformer using the invention.
  • Fig. 2 is a detailed cross-sectional view of the gasket of the invention.
  • the electrical power transformer 10 comprises a housing 12 having cooling fluid 14 and a transformer element 16.
  • a circular relief valve nests in and is mounted on the circular housing opening 18.
  • the pressure relief valve is made up of a tubular base 22 and includes a spring 24 which acts against the disc valve 26 to keep the valve normally closed.
  • a slot 28 is formed in the tubular base 22 to re ⁇ ceive a gasket 32.
  • the slot 28 includes an undercut portion 30.
  • the resilient gasket 32 in the preferred embodiment, in cross section, is a five-sided gasket which may be seen, with reference to Fig. 2, to have a base portion 34 with first and second corners 36 and 38.
  • the normally horizontal base portion 34 of gasket 32 normally rests in the slot 28 of tubular base 22.
  • a substantially vertical longest side 40 extends from the first corner 36 of the base side to a position corresponding to the closed position of the movable disc valve member 26.
  • the normally horizontal top side 42 of the gasket 32 normally abuts the valve member 26 when the valve is in the closed position.
  • a tapered side 44 of the gasket 3 extends from the top side 42 to a position further from the substantially - 3 -
  • a substantially vertical side 46 extends from the tapered side 44 to the second corner 38 of the base side 34.
  • the epoxy and gasket are both securely retained so that even violent excursions of the valve or extreme pressure from the transformer housing will not destroy or dislodge the five-sided gasket from the tubular base 22.
  • steps involved include forming a circular slot 28 in the base 22, the slot 28 including an undercut portion 30; inserting a five- sided resilient gasket 32 in the circular slot; and flowing epoxy 48 over a portion of the gasket 32 and into the undercut 30 and remaining slot 28 so that when epoxy hardens, the gasket 32 is retained securely in the slot 28.
  • the invention thereby provides a method and apparatus for retaining a gasket in position during extreme operating conditions of an electrical power transformer valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Gasket Seals (AREA)
  • Transformer Cooling (AREA)
EP19890902849 1988-02-05 1989-01-25 Gasket assembly and electrical power transformer including the same Withdrawn EP0429447A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/152,668 US4843187A (en) 1988-02-05 1988-02-05 Gasket assembly and electrical power transformer including the same
US152668 2002-05-21

Publications (2)

Publication Number Publication Date
EP0429447A1 EP0429447A1 (en) 1991-06-05
EP0429447A4 true EP0429447A4 (en) 1992-12-30

Family

ID=22543878

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890902849 Withdrawn EP0429447A4 (en) 1988-02-05 1989-01-25 Gasket assembly and electrical power transformer including the same

Country Status (10)

Country Link
US (1) US4843187A (ko)
EP (1) EP0429447A4 (ko)
JP (1) JPH03503344A (ko)
CA (1) CA1288792C (ko)
DK (1) DK172090A (ko)
ES (1) ES2012979A6 (ko)
GR (1) GR1002636B (ko)
MX (1) MX166652B (ko)
PT (1) PT89626B (ko)
WO (1) WO1989007324A1 (ko)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047441B1 (es) * 1992-03-30 1996-10-16 Electrotecnica Arteche Hermano Transformador de tension electrica perfeccionado.
US5762341A (en) * 1997-01-13 1998-06-09 Zygo Mould Limited O-ring insert
DE10065428A1 (de) * 2000-01-12 2001-07-26 Tiefenbach Bergbautechnik Gmbh Sitzventil
US6497248B2 (en) * 2001-01-18 2002-12-24 Qualitrol Corporation Pressure relief device with one piece gasket
ITPD20010014U1 (it) * 2001-02-27 2002-08-27 Comem Spa Struttura di valvola di sicurezza particolarmente per trasformatori elettrici in bagno d'olio.
DE10312177B3 (de) * 2003-03-19 2004-06-17 Maschinenfabrik Reinhausen Gmbh Druckentlastungsventil
DE502004006573D1 (de) * 2003-03-19 2008-04-30 Reinhausen Maschf Scheubeck Druckentlastungsventil
US7210497B2 (en) * 2003-12-19 2007-05-01 Qualitrol Corporation Pressure relief device with increased flow rate
US7111637B2 (en) * 2003-12-19 2006-09-26 Qualitrol Corporation Enclosure system for pressure relief device
US7887025B2 (en) * 2007-12-06 2011-02-15 Hartman Thomas A Ball valve housing seat and method of securing the same to a ball valve
US20110205742A1 (en) * 2010-02-25 2011-08-25 Mark Timmy Lee Modular led lamps with integrated transformer
HUE030146T2 (en) * 2010-11-03 2017-04-28 Leinemann Gmbh & Co Kg switching valve
TW201603071A (zh) * 2014-02-25 2016-01-16 好根那公司 感應器
CN113707414B (zh) * 2021-08-30 2024-07-12 天长市万福电子有限公司 具有防尘、防水效果的变压器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2052474A1 (de) * 1969-10-25 1971-05-06 Crane Ltd Dichtungsvornchtung
EP0094702A1 (en) * 1982-05-19 1983-11-23 Qualitrol Corporation Pressure relief device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1601960A (en) * 1922-03-10 1926-10-05 Egbert H Gold Hose coupling
US1608424A (en) * 1924-02-04 1926-11-23 George E Putnam Mud-pump valve
US1751664A (en) * 1928-11-20 1930-03-25 Frederick E Smith Valve seat
US1948628A (en) * 1929-11-25 1934-02-27 Arthur J Penick Valve mechanism
US1811166A (en) * 1930-04-14 1931-06-23 Jenkins Bros Check valve structure
US2065870A (en) * 1934-05-14 1936-12-29 Parr Instr Company Oxygen bomb
US2451276A (en) * 1944-04-27 1948-10-12 Dill Mfg Co Valve insides
US2621011A (en) * 1946-11-20 1952-12-09 Maytag Co High-pressure valve seal
US3095619A (en) * 1958-12-16 1963-07-02 Edwin F Peterson Method and means for sealing adjacent coacting closure surfaces of cavity contouringstructures
US3217082A (en) * 1962-10-08 1965-11-09 Qualitrol Corp Snap-action fault protector for electrical apparatus
US3914528A (en) * 1974-03-20 1975-10-21 Qualitrol Corp Pressure relief device for power transformer
US4259984A (en) * 1978-10-31 1981-04-07 Dover Corporation Valve construction
JPS57173672A (en) * 1981-04-21 1982-10-26 Kubota Ltd Fixing method of valve box side seat
US4676266A (en) * 1982-01-07 1987-06-30 Qualitrol Corporation Pressure relief device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2052474A1 (de) * 1969-10-25 1971-05-06 Crane Ltd Dichtungsvornchtung
EP0094702A1 (en) * 1982-05-19 1983-11-23 Qualitrol Corporation Pressure relief device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 20 (M-188)(1165) 26 January 1983 & JP-57 173 672 ( KUBOTA TEKKO K.K. ) 26 October 1982 *

Also Published As

Publication number Publication date
JPH03503344A (ja) 1991-07-25
PT89626A (pt) 1989-10-04
EP0429447A1 (en) 1991-06-05
MX166652B (es) 1993-01-26
ES2012979A6 (es) 1990-04-16
DK172090D0 (da) 1990-07-17
GR890100063A (el) 1994-03-31
US4843187A (en) 1989-06-27
DK172090A (da) 1990-07-17
JPH0515287B2 (ko) 1993-03-01
CA1288792C (en) 1991-09-10
WO1989007324A1 (en) 1989-08-10
PT89626B (pt) 1994-02-28
GR1002636B (el) 1997-03-07

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